Southport
North Carolina, United States Of America
34.00 ° N
78.00 ° W
20 ft
Subtropical moist forest
Cfa Humid subtropical climate
+
Cfak Subtropical climate with evenly distributed precipitation with hot summer with cool winter
Traditional Koppen classification: Cfa (Humid subtropical climate)

Official definition:
  • C – temperature of warmest month greater than or equal to 10 °C and temperature of coldest month less than 18 °C, but higher than -3 °C
  • f – precipitation is relatively evenly distributed throughout the year and do not fulfill classification criteria for s or w type
  • a - temperature of warmest month above 22 °C

The Cfa climate type is typical for areas on the Eastern coasts of continents, mostly between 20th and 30th latitude. The average temperature of the warmest month is higher than 22 °C and the temperature throughout the year range from usually -3 to 18 °C. In the winter, however, in some cases it can be well below freezing point.

Precipitation is relatively evenly distributed during the entire year. Humidity tends to be higher during the summer half year, when the conditions resemble the humid tropical climate. The total annual rainfall can be quite variable, most commonly between 650 and 2500 mm. Thunderstorms during the summer are frequent.

Cfa climate type can be found for example in the Southeastern USA, Northern part of Argentina, Uruguay and Southern part of Brazil, Southern Japan and South of China.


Modern Trewartha classification: Cfak (Subtropical climate with evenly distributed precipitation with hot summer with cool winter)

Subtropical in the Koppen and Trewartha classification is defined as a region, where at least eight months has an average temperature of more than 10 °C, but the coldest month has an average temperature of less than 18 °C. The individual subtypes then differ in their annual precipitation distribution. In Trewartha classification there is a condition of maximum annual precipitation of 900 mm.

In general the subtropical climate is usually found in areas polewards from the tropical zones. It can also be found inside tropical zones at places with higher altitude. Typical are for example citrus trees or palm trees.

The Cf subtype is characterized by precipitation evenly distributed throughout the year.

It can be found for example in Eastern part of South America, in large areas in Southeast U.S., Northern Italy, the Southwest tip of Russia, in Southeast Asia, some parts of Japan or East coast of Australia.

  • hot summer: warmest month with average temperature between 23 and 28 °C
  • cool winter: coldest month with average temperature between 0 and 10 °C

Summary

62 °F
52 / 73

57.0 in


Temperature
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Min Temperature(°F) 32.034.042.050.059.067.071.070.064.052.043.035.0 52.0
Avg Temperature(°F) 43.046.053.061.069.076.080.079.074.064.056.047.0 62.0
Max Temperature (°F) 55.057.064.072.079.085.088.087.083.075.068.059.0 73.0
Range 23.023.022.022.020.018.017.017.019.023.025.024.0 21.0


Max month Min month Annual range
Min Temperature Jul Jan 39.0°F
Avg Temperature Jul Jan 37.0°F
Max Temperature Jul Jan 33.0°F
Temperature range Nov Jul, Aug 56.0°F
Average
1 2 3 4 5 6 7 8 9 10 11 12
Min Temperature(°F)
Avg Temperature(°F)
Max Temperature(°F)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Min Temperature 59.0 42.0 50.33 17.0 71.0 67.0 69.33 4.0 64.0 43.0 53.00 21.0 35.0 32.0 33.67 3.0
Avg Temperature 69.0 53.0 61.00 16.0 80.0 76.0 78.33 4.0 74.0 56.0 64.67 18.0 47.0 43.0 45.33 4.0
Max Temperature 79.0 64.0 71.67 15.0 88.0 85.0 86.67 3.0 83.0 68.0 75.33 15.0 59.0 55.0 57.00 4.0

Temperature
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Temperature (°F) 43.046.053.061.069.076.080.079.074.064.056.047.0 62.0


Max month Min month Annual range
Avg Temperature Jul Jan 37.0°F
Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Temperature (°F)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Avg Temperature 69.0 53.0 61.00 16.0 80.0 76.0 78.33 4.0 74.0 56.0 64.67 18.0 47.0 43.0 45.33 4.0


Humidity
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Humidity (%) -9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0 62.0


Max month Min month Annual range
Avg Humidity 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec 0.0%
Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Humidity (%)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Avg Humidity -9999.0 -9999.0 -9999.00 0.0 -9999.0 -9999.0 -9999.00 0.0 -9999.0 -9999.0 -9999.00 0.0 -9999.0 -9999.0 -9999.00 0.0


Precipitation
+

Month Monthly average Annual total
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in) 4.74.44.53.04.04.96.97.16.93.33.34.1 4.8 57.0
Wetdays -9999-9999-9999-9999-9999-9999-9999-9999-9999-9999-9999-9999 -9999 -119988
Wetdays ratio (%) -32254.8
-9999,10030
-35710.7
-9999,10027
-32254.8
-9999,10030
-33330.0
-9999,10029
-32254.8
-9999,10030
-33330.0
-9999,10029
-32254.8
-9999,10030
-32254.8
-9999,10030
-33330.0
-9999,10029
-32254.8
-9999,10030
-33330.0
-9999,10029
-32254.8
-9999,10030
-32873.4
-32873.4,32973.4


Max month Min month Max Season Min Season Annual range
Average monthly precipitation Aug Apr Summer Spring 4.1in
Wetdays 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec Autumn Spring, Summer, Winter 0
Month
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in)
Wetdays / month


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Range Total Max Min Range Total Max Min Range Total Max Min Range Total
Average monthly precipitation (in) 4.5 3.0 1.4 11.5 7.1 4.9 2.2 18.9 6.9 3.3 3.5 13.5 4.7 4.1 0.7 13.2
Wetdays -9999 -9999 0 -29997 -9999 -9999 0 -29997 64 -9999 10063 -9879 -9999 -9999 0 -29997

Precipitation
+

Month Monthly average Annual total
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in) 4.74.44.53.04.04.96.97.16.93.33.34.1 4.8 57.0


Max month Min month Max Season Min Season Annual range
Average monthly precipitation Aug Apr Summer Spring 4.1in
Month
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Range Total Max Min Range Total Max Min Range Total Max Min Range Total
Average monthly precipitation (in) 4.5 3.0 1.4 11.5 7.1 4.9 2.2 18.9 6.9 3.3 3.5 13.5 4.7 4.1 0.7 13.2


Sunlight / Day length
+

Max day length Min day length Sunlight/Day length
Jan -9999 min
-167 h 21 min
611 min
10 h 11 min
611,829
632 min
10 h 32 min
(31.1.)
632,808
596 min
9 h 56 min
(1.1.)
596,844
-1636.8 %
-9999,10610
Feb -9999 min
-167 h 21 min
660 min
10 h 60 min
660,780
688 min
11 h 28 min
(29.2.)
688,752
633 min
10 h 33 min
(1.2.)
633,807
-1515.9 %
-9999,10659
Mar -9999 min
-167 h 21 min
721 min
12 h 1 min
721,719
753 min
12 h 33 min
(31.3.)
753,687
690 min
11 h 30 min
(1.3.)
690,750
-1385.9 %
-9999,10720
Apr -9999 min
-167 h 21 min
785 min
13 h 5 min
785,655
813 min
13 h 33 min
(30.4.)
813,627
755 min
12 h 35 min
(1.4.)
755,685
-1274.2 %
-9999,10784
May -9999 min
-167 h 21 min
837 min
13 h 57 min
837,603
856 min
14 h 16 min
(31.5.)
856,584
814 min
13 h 34 min
(1.5.)
814,626
-1194.3 %
-9999,10836
Jun -9999 min
-167 h 21 min
862 min
14 h 22 min
862,578
864 min
14 h 24 min
(19.6.)
864,576
857 min
14 h 17 min
(1.6.)
857,583
-1159.6 %
-9999,10861
Jul -9999 min
-167 h 21 min
847 min
14 h 7 min
847,593
861 min
14 h 21 min
(1.7.)
861,579
828 min
13 h 48 min
(31.7.)
828,612
-1180.0 %
-9999,10846
Aug -9999 min
-167 h 21 min
800 min
13 h 20 min
800,640
827 min
13 h 47 min
(1.8.)
827,613
771 min
12 h 51 min
(31.8.)
771,669
-1249.8 %
-9999,10799
Sep -9999 min
-167 h 21 min
739 min
12 h 19 min
739,701
769 min
12 h 49 min
(1.9.)
769,671
709 min
11 h 49 min
(30.9.)
709,731
-1352.6 %
-9999,10738
Oct -9999 min
-167 h 21 min
676 min
11 h 16 min
676,764
707 min
11 h 47 min
(1.10.)
707,733
647 min
10 h 47 min
(31.10.)
647,793
-1478.7 %
-9999,10675
Nov -9999 min
-167 h 21 min
622 min
10 h 22 min
622,818
645 min
10 h 45 min
(1.11.)
645,795
602 min
10 h 2 min
(30.11.)
602,838
-1608.5 %
-9999,10621
Dec -9999 min
-167 h 21 min
595 min
9 h 55 min
595,845
602 min
10 h 2 min
(1.12.)
602,838
592 min
9 h 52 min
(20.12.)
592,848
-1680.8 %
-9999,10594
Year -10832 min
-181 h 28 min
730 min
12 h 10 min
730,710
864 min
14 h 24 min
(19. 6.)
864,576
592 min
9 h 52 min
(20. 12.)
592,848
-1484.3 %
-10832,11562



Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Sunlight/day Max Min Average Sunlight/day Max Min Average Sunlight/day Max Min Average Sunlight/day
(min/day) -9999 -9999 -9999 -1280.1%
-9999,10780
-9999 -9999 -9999 -1195.6%
-9999,10835
-9999 -9999 -9,999 -1472.6%
-9999,10678
-9999 -9999 -9999 -1610.2%
-9999,10620
Day length 856 690 781 864 771 836 769 602 679 688 592 621

Day length
+

Max day length Min day length
Jan 611 min
10 h 11 min
611,829
632 min
10 h 32 min
(Array.1.)
632,808
596 min
9 h 56 min
(1.1.)
596,844
Feb 660 min
10 h 60 min
660,780
688 min
11 h 28 min
(Array.2.)
688,752
633 min
10 h 33 min
(1.2.)
633,807
Mar 721 min
12 h 1 min
721,719
753 min
12 h 33 min
(Array.3.)
753,687
690 min
11 h 30 min
(1.3.)
690,750
Apr 785 min
13 h 5 min
785,655
813 min
13 h 33 min
(Array.4.)
813,627
755 min
12 h 35 min
(1.4.)
755,685
May 837 min
13 h 57 min
837,603
856 min
14 h 16 min
(Array.5.)
856,584
814 min
13 h 34 min
(1.5.)
814,626
Jun 862 min
14 h 22 min
862,578
864 min
14 h 24 min
(Array.6.)
864,576
857 min
14 h 17 min
(1.6.)
857,583
Jul 847 min
14 h 7 min
847,593
861 min
14 h 21 min
(Array.7.)
861,579
828 min
13 h 48 min
(31.7.)
828,612
Aug 800 min
13 h 20 min
800,640
827 min
13 h 47 min
(Array.8.)
827,613
771 min
12 h 51 min
(31.8.)
771,669
Sep 739 min
12 h 19 min
739,701
769 min
12 h 49 min
(Array.9.)
769,671
709 min
11 h 49 min
(30.9.)
709,731
Oct 676 min
11 h 16 min
676,764
707 min
11 h 47 min
(Array.10.)
707,733
647 min
10 h 47 min
(31.10.)
647,793
Nov 622 min
10 h 22 min
622,818
645 min
10 h 45 min
(Array.11.)
645,795
602 min
10 h 2 min
(30.11.)
602,838
Dec 595 min
9 h 55 min
595,845
602 min
10 h 2 min
(Array.12.)
602,838
592 min
9 h 52 min
(20.12.)
592,848
Year 730 min
12 h 10 min
730,710
864 min
14 h 24 min
(20. 6.)
864,576
592 min
9 h 52 min
(21. 12.)
592,848



Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Max Min Average Max Min Average Max Min Average
Day length 856 690 781 864 771 836 769 602 679 688 592 621

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